Chemical News and Journal of Industrial Science, Volum 78Chemical news office, 1898 |
Des de l'interior del llibre
Resultats 1 - 5 de 85.
Pàgina 12
... prepared by heating 10 grms . of chlorofumaric acid with 35 grms . of a solution of HBr gas in acetic acid first to 125 ° and then to 140 ° in a closed glass vessel . On cooling , the product crystallises out in plates ; it decomposes ...
... prepared by heating 10 grms . of chlorofumaric acid with 35 grms . of a solution of HBr gas in acetic acid first to 125 ° and then to 140 ° in a closed glass vessel . On cooling , the product crystallises out in plates ; it decomposes ...
Pàgina 13
... prepared as above . He states , however , that the substance was insoluble in all ordinary solvents save aniline , by which it was decom- posed , and that its melting - point was above 300 ° . On repeating Kuehn's experiment , a fine ...
... prepared as above . He states , however , that the substance was insoluble in all ordinary solvents save aniline , by which it was decom- posed , and that its melting - point was above 300 ° . On repeating Kuehn's experiment , a fine ...
Pàgina 14
... prepared by Strauss , by the action of ammonia on toluylene di- isocyanate . The only difference between Lussy's experi- ment and my own , as far as may be determined from the literature , is that he prepared his di - isocyanate by the ...
... prepared by Strauss , by the action of ammonia on toluylene di- isocyanate . The only difference between Lussy's experi- ment and my own , as far as may be determined from the literature , is that he prepared his di - isocyanate by the ...
Pàgina 18
... prepared from ordinary foil , by re - solution and re - precipitation as ammonio- chloride , and subsequent heating . Both metals were fused into buttons before use . The atomic heats come closer together than those of Co and Ni ...
... prepared from ordinary foil , by re - solution and re - precipitation as ammonio- chloride , and subsequent heating . Both metals were fused into buttons before use . The atomic heats come closer together than those of Co and Ni ...
Pàgina 20
... prepared , the latter is apt to be impure , and is best formed by the prolonged digestion of disazo - benzeneapigenin with boiling acetic anhydride . It forms orange - red needles melting at 277-280 ° when rapidly heated , and in ...
... prepared , the latter is apt to be impure , and is best formed by the prolonged digestion of disazo - benzeneapigenin with boiling acetic anhydride . It forms orange - red needles melting at 277-280 ° when rapidly heated , and in ...
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Frases i termes més freqüents
acetic acid action alcohol alkaline aluminium ammonia ammonium amount analysis apparatus argon atomic weight B.Sc barium boiling bromine calcium carbide cent Chem Chemical Society Chemistry chloride chromic acid chromium colour compounds Constitution not published containing copper course crucible crystallised crystals decomposed decomposition determined dilute dissolved distilled electric elements estimation ether evaporated examined excess experiments ferric ferrous filtered filtrate flask formic acid gases gives glass grms heat hydrochloric acid hydrogen ignited iodide iodine iron Laboratory Lectures liquid London Lord Rayleigh M.grms manganese matter melted metals method mineral mixture molecule nickel nitrate nitric acid nitrogen obtained oxide oxidised oxygen paper permanganate phosphorus platinum potash potassium precipitate prepared present pressure produced Professor pure quantity reaction reduced residue rock salt samples saturated Science separation silicates soda sodium sodium carbonate soluble solution Students substance sulphate sulphide sulphuric acid temperature tion tube vanadium vapour volume wheat zirconium
Passatges populars
Pàgina 122 - FELKIN, HM— Technical Education in a Saxon Town. Published for the City and Guilds of London Institute for the Advancement of Technical Education.
Pàgina 24 - Second, Revised, and Enlarged Edition. With a Preface by JOHANNES WISLICENUS, Professor of Chemistry at the University of Leipzig; and an Appendix 'Stereo-chemistry among Inorganic Substances,' by ALFRED WERNER, Professor of Chemistry at the University of Zurich.
Pàgina 142 - Annalen on The Constitution and Metamorphoses of Chemical Compounds, and on the Chemical Nature of Carbon...
Pàgina 129 - England than a scarcity of fertilisers — it means a scarcity of food. It is impossible that such a sinful violation of the divine laws of Nature should for ever remain unpunished ; and the time will probably come for England sooner than for any other country, when, with all her wealth in gold, iron, and coal, she will be unable to buy one-thousandth part of the food which she has, during hundreds of years, thrown recklessly away.
Pàgina 135 - No incident in my scientific career is more widely known than the part I took many years ago in certain psychic researches. Thirty years have passed since I published an account o( experiments tending to show that outside our scientific knowledge there exists a Force exercised by intelligence differing from the ordinary intelligence common to mortals.
Pàgina 136 - I cross the boundary of the experimental evidence, and discern in that Matter — which we, in our ignorance of its latent powers, and notwithstanding our professed reverence for its Creator, have hitherto covered with opprobrium, — the promise and potency of all terrestrial life.
Pàgina 99 - Bibliography of the Metals of the Platinum Group, Platinum, Palladium, Iridium, Rhodium, Osmium, Ruthenium, 1748-1896.
Pàgina 271 - The Chairman proposed, in a few neat sentences, the toasts of the Queen and the Prince and Princess of Wales, and the other members of the Royal Family, which were pledged with enthusiasm. In proposing the Army, Navy, and Reserve Forces, Sir Henry said he was very glad to associate with it a soldier who was able, from the position which he held, to reply for all branches of the service, commanding as he did...
Pàgina 214 - ... of a coal of unknown origin, and 0.45 per cent of a coal from Peru. Still later examinations in this laboratory of about 100 rocks, chiefly igneous, covering nearly the whole continental territory of the United States, show, not only its general qualitative and quantitative distribution, but that it predominates in the less siliceous igneous rocks and is absent, or nearly so, in those high in silica.
Pàgina 127 - The virgin land has been rapidly absorbed, until at present there is no land left for wheat without reducing the area for maize, hay, and other necessary crops.